[nginx] dso

[Igor Sysoev]

On 27 Apr 2016, at 18:51, 洪志道 <hongzhidao at gmail.com> wrote:

> Thanks for your reply.
> 
> Is it the only way to solve the problem?

This is a way to reload a module in production without service interruption.

> I think it will be common that developers try to use dso instead of static module.

Developers can simply stop and start nginx again.

-- 
Igor Sysoev
http://nginx.com

> Nginx offical site points out we could load in so modules using reload or restart, but it seems forget to instruct the details about reload.
> And it's a great design, thanks again.
> 
> 2016-04-27 19:22 GMT+08:00 Igor Sysoev <igor at sysoev.ru>:
> On 27 Apr 2016, at 12:10, 洪志道 <hongzhidao at gmail.com> wrote:
> 
>> Hi,
>> 
>> for example following config:
>> 
>> daemon  on;
>> ...
>> load_module  modules/ngx_http_test_module.so;
>> ...
>> 
>> > start nginx
>> > change ngx_http_test_module.c, then regenerate so file
>> > kill -HUP pid
>> 
>> I found nginx still run the old so file (load first time), and how to work with new so file?
>> 
>> I tried .../sbin/nginx -s reload, It works as I expected. It seems there is some differences in 'kill -HUP' and 'sbin/nginx -s reload’;
> 
> kill -USR2 `cat nginx.pid`; sleep 2; kill -QUIT `cat nginx.pid.oldbin`
> 
> 
> -- 
> Igor Sysoev
> http://nginx.com

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